Antenna



FIG. 1 is a front elevational view of an antenna showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front perspective view thereof;

FIG. 8 is a rear perspective view thereof;

FIG. 9 is a perspective view thereof, showing the antenna in use; and,

FIG. 10 is another perspective view thereof, showing the antenna in use.

The light grey are as surrounded by broken lines are portions of the antenna that form no part of the claimed design. 

CLAIM The ornamental design for an antenna, as shown and described. 